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Description
PYROID® Pyrolytic Graphite Product Line
Vitreous Carbon Substrate
Our PYROID® pyrolytic graphite is a very light weight, 5’9’s pure, solid crystal composition, with no granular components, extremely smooth surface, capable of withstanding cryogenic temperatures as well as temperatures in excess of 3,000°C
The material is extremely anisotropic, meaning it conducts heat and electricity in the a-b plane like copper but acts like a ceramic in the normal direction. In an annealed state, the thermal and conduction properties increase up to four to eight times that of aluminum and copper respectively.
The material has zero porosity making it extremely stable and exhibits no outgassing. It is ideal for use in corrosive environments including acids and chlorine, and is highly transparent to organic samples and electrons, for analytical work, such as x-ray investigation, metallurgical, crystal growth, medical imaging technology etc.
Physical Properties of PYROID® Pyrolytic Graphite
| Property | Direction* | Metric Units | English Units |
| Density |
—– | 2.22 g/cc | 1.37 lb/ft3 |
| Flexual Strength | |||
| Room Temperature | a | 840 kg/cm2 | 12,000 psi |
| 2750°C | a | 3,500 kg/cm2 | 50,000 psi |
| Compressive Strength | |||
| Room Temperature | a | 1,050 kg/cm2 | 15,00 psi |
| c | 1,750 kg/cm2 | 25,000 psi | |
| Shear Strength | |||
| Room Temperature | a | 70 kg/cm2 | 1,000psi |
| >Coefficient Thermal Expansion | |||
| Room Temperature | a | .60 x 10-6 cm/cm°C | 1.0 x 10-6 in/in°F |
| 2200°C | a | .68 x 10-6 cm/cm°C | 1.2 x 10-6 in/in°F |
| Room Temperature | c | 6.8 x 10-6 cm/cm°C | 12.0 x 10-6 in/in°F |
| 2200°C | c | 8.0 x 10-6 cm/cm°C | 14.7 x 10-6 in/in°F |
| Thermal Conductivity | |||
| Room Temperature | a | 345 W/m°K | 200 BTU/(hr ft2)(°F/ft) |
| 1650°C | a | 114 W/m°K | 66 BTU/(hr ft2)(°F/ft) |
| Room Temperature | c | 1.73 W/m°K | 1.00 BTU/(hr ft2)(°F/ft) |
| 3000°F | c | 1.30 W/m°K | 0.75 BTU/(hr ft2)(°F/ft) |
| Electric Resistivity | |||
| Room Temperature | a | 500 µΩcm | |
| 1650°C | a | 200 µΩcm | |
| Room Temperature | c | 0.6 Ωcm | |
| 1650°C | c | 0.22 Ωcm | |
| Scleroscope Hardness | a | 103 | 103 |
| c | 68 | 68 | |
| Oxidation Threshold | 650°C | 1200°F | |
| Permeability | Helium Leak Tight at 10 – 6 mmHg |
Pyrolytic Graphite Stripper Film
Smooth pyrolytic graphite stripper film is used in radiation sources, nuclear particle high energy density research, and medical diagnostic imaging instruments Pyrolytic graphite film offers major customer benefits relative to alternative materials such as amorphous carbon film or polycrystalline graphite films.
Pyrolytic graphite film is:
– Stable at high temperature and vacuum
– Easy to flex due to inherent higher flexural modulus
– Erodes very slowly
Resulting in:
– Higher strength than alternative materials
– Last 5 times longer than alternative materials
PYROID® Pyrolytic Film Thickness/Real Size Conversion
| Thickness, in. | Wt/sq in. | Thickness, µm | Wt/sq cm |
| 0.0002 | 0.0065 g | 5 | 1.0 mg |
| 0.0004 | 0.0129 g | 10 | 2.0 mg |
We can custom make foils up to 1.5 inch wide and 3 inches long from 5µm and up thicknesses.
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